| APA | SP-IR. (2012, February 12). In Acronym Geek. Retrieved 15:57, February 12, 2012, from http://www.acronymgeek.com/SP-IR |
| MLA | "SP-IR." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/SP-IR>. |
| MHRA | 'SP-IR', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/SP-IR> [accessed 12 February 2012] |
| Chicago | "SP-IR", http://www.acronymgeek.com/SP-IR (accessed February 12, 2012). |
| CBE/CSE | SP-IR [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/SP-IR. |
| Bluebook | SP-IR, http://www.acronymgeek.com/SP-IR (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SP-IR, http://www.acronymgeek.com/SP-IR (optional description here) (as of Feb. 12, 2012, 15:57). |
| AMA | SP-IR. Acronym Geek. February 12, 2012, 15:57. Available at: http://www.acronymgeek.com/SP-IR. Accessed February 12, 2012, 15:57. |